ArcGIS REST Services Directory
JSON

Hydrographic_location_main_basin (FeatureServer)

View In:   Map Viewer

Service Description: This polygon layer represents the watersheds and sub-watersheds of the main rivers in the Amazon. It provides a reference for the hydrographic systems present and the general direction of runoff. This information is crucial as water resource management is a priority for supplying populations, supporting agricultural and industrial activities, and enabling fluvial communication.

Service ItemId: 430d5745026649eb84142e860c79d5b6

Has Versioned Data: false

Max Record Count: 2000

Supported query Formats: JSON

Supports applyEdits with GlobalIds: False

Supports Shared Templates: True

All Layers and Tables

Layers:

Description:

Watersheds in the Amazon

This polygon layer represents the watersheds and sub-watersheds of the main rivers in the Amazon. It provides a reference for the hydrographic systems present and the general direction of runoff. This information is crucial as water resource management is a priority for supplying populations, supporting agricultural and industrial activities, and enabling fluvial communication.

The Amazon region is home to some of the most important hydrographic systems in the world, including the largest of all, the Amazon River basin itself. A watershed is a land area that drains rainfall into a main river channel via a network of tributaries. It is an interconnected system that collects and transports available water to the sea within a given area. In the Amazon, major rivers originate in the Andes, the highlands of the Guiana Shield, and the Brazilian Shield. Variations in rainfall, particularly in source areas, cause fluctuations in water availability across different watersheds. These rivers support critical ecosystems that, in addition to their biodiversity value, provide significant fishery resources that benefit a large portion of the population. Watersheds often span multiple countries, making their conservation and management a matter of regional importance.

This layer is an adaptation by AmazoniaForever360+ of original data from various sources. These include the WMO Basins and Sub-Basins project (WMOBB Basins), an ongoing GIS initiative by the Global Runoff Data Centre (GRDC). Another key source is HydroSHEDS, a database offering global digital layers in support of hydro-ecological research and applications worldwide. The database of watersheds and hydrographic divisions of Brazil, along with other official sources from Amazonian countries, was also reviewed. Data relevant to the Amazon were extracted, the original geodata attributes were simplified, and more descriptive attributes were generated.

Sources



Copyright Text: Original Compilation AmazoniaForever360+, Inter-American Development Bank, 2023-2024. IBGE, Brazil: https://www.ibge.gov.br/geociencias/cartas-e-mapas/informacoes-ambientais/31653-bacias-e-divisoes-hidrograficas-do-brasil.html GRDC (2020): WMO Basins and Sub-Basins / Global Runoff Data Centre, GRDC. 3rd, rev. ext. ed. Koblenz, Germany: Federal Institute of Hydrology (BfG). Original data available at: https://grdc.bafg.de/products/basin_layers/wmo_basins/ Additional reading and methodology: https://grdc.bafg.de/downloads/wmo_basins_subbasins_techdoc.pdf HydroSHEDS database: https://www.hydrosheds.org/products/hydrobasins Lehner, B., Grill, G. (2013). Global river hydrography and network routing: baseline data and new approaches to study the world’s large river systems. Hydrological Processes, 27(15): 2171–2186. https://doi.org/10.1002/hyp.9740 https://www.hydrosheds.org/

Spatial Reference: 4326 (4326)

Initial Extent:
Full Extent:
Units: esriDecimalDegrees

Child Resources:   Info   SharedTemplates

Supported Operations:   Query   ConvertFormat   Get Estimates